Hansen's Northwest Native Plant Database


Iris missouriensis (Western Iris)

 

Kingdom

: 

 Plantae – Plants

Subkingdom

: 

 Tracheobionta – Vascular plants

Superdivision

: 

 Spermatophyta – Seed plants

Division

: 

 Magnoliophyta – Flowering plants

Class

: 

 Liliopsida – Monocotyledons

Subclass

: 

 Liliidae

Order

: 

 Liliales

Family

: 

 Iridaceae – Iris family

Genus

: 

 Iris L. – iris

Species

: 

 Iris missouriensis Nutt. – Rocky Mountain iris

This rare and beautiful blue iris is found on the west side of the Cascades only in the Islands of Puget Sound.

It can be grown far beyond its native habitat, however, as it is hardy between USDA zones 5-10.

This iris likes regular watering and a generous helping of compost in its planting hole.

“Iris” is the Greek word for rainbow, a reference to the variegated flowers.

For a short comparison of northwest native iris, click here.

Photo below by Jim Peaco

   

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